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Lady Gaga performs at the MTV Video Music Aid Japan benefit concert to support victims of the March 11 earthquake and tsunami.

Just before she headlined Saturday night's Japan disaster relief benefit concert, Lady Gaga was sued over the bracelets she's been selling for the same cause.

According to the federal class action, the do-gooder pop star wasn't exactly being honest when her Web site claimed all the proceeds from sales of her "We Pray for Japan" wristbands would go to help victims of the March earthquake and tsunami.

A Detroit-era legal network said in its complaint, filed Friday, that Gaga kept part of the $5 that every customer paid for a wristband and inflated shipping charges so she could pocket more. She then counted even the money she allegedly pocketed in her donation figures, artificially inflating donation numbers, in order to make more money, the suit charged.